Question: What is the event location of the Battle of the Atlantic, which has a tributary of River Pol?
Paraphrase: What is the tournament place of the Battle of the Atlantic, which has a tributary of River Pol?
SPARQL (Wikidata): SELECT ?answer WHERE { wd:Q157627 wdt:P276 ?answer . ?answer wdt:P974 wd:Q21995585}
Answer: Atlantic Ocean